What a copy bot is

Watch a leader's public trades → decide by fixed rules → act: buy under a cap, or skip.

Most leaders are not copyable. Copies fill worse than the leader. Fees and crowding cost money. You can lose what you put in.

Before you start

Read Polymarket's terms and check you are eligible where you live; https://polymarket.com/api/geoblock checks only your IP. No VPNs.
Use a dedicated wallet with only what you can lose.
Keep private keys and API secrets local: never in a chat, an agent or a page.

Set filters on the screener, then add .json to the path and &limit=0 (else 50 rows).

https://chameleons.markets/?stars=4&copyable=50
https://chameleons.markets/index.json?stars=4&copyable=50&limit=0

Each trader's recipe has its wallet and rules: /traders/<name>-<8hex>/copy.md.

Trigger: their buys on one outcome reach $20 (a 600 s gap resets). Copy once per burst, at the first buy priced 2¢–97¢.
Their rated category; any two-outcome market; market ends ≤ 30 d; no 5- or 15-minute crypto.
Sports and esports: pre-match only, before gameStartTime.
Cap: that buy's price + 3¢, rounded down to the tick, max 99¢.
As soon as you see their buy (rating assumes ~44 s; 9–120 s), send a Fill-and-Kill (FAK) order with limit = cap. Re-check the ask every ≤ 10 s until 600 s after it.
No resting bids: they fill mostly when the leader was wrong.
Small fixed ticket, per-market and daily caps. You set the amounts.
Hold to resolution.

Run it: adapt the skeleton in /bots.md, paper mode first.

That query is your bot's criteria.

Criteria	Page query
4★+, Copyable ≥ 50%, ROIC low end above 0%	`/?stars=4&copyable=50&ret_lo=0`
One category, uncrowded	`/categories/geopolitics?uncrowded=1`
Hold <1d	`/?hold_h=24`
Humans only	`/?kind=human`
Combined	`/?uncrowded=1&hold_h=24&kind=human&active_d=7`

Re-sync daily, after the ~06:00 UTC snapshot:

A filter typo is refused (400), naming the parameter you meant.
Add new traders; drop missing ones.
Stop a trader under 3★, at Can't copy or Too few, on a 404, or at rules_apply: false in its recipe or its row (why_not says why).
Pause while meta.stale is true.

Log every copy. Fills under Copyable, or results under ROIC, mean the rating overstates your bot.

MCP https://chameleons.markets/mcp: find_traders, get_trader, get_copy_recipe, get_bot_guide, list_categories, explain_rating.
/bots.md (long version), /llms.txt, /schema.json, /agents.
/api/v1/feed: leader trades ~20–30 s behind, with gate and fill status; 60/min per IP.

Not affiliated with Polymarket. We never trade for you or hold funds or keys. Past, modelled, not advice. Contact ox@mail.grokbot.com.